PhysicalConstant.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
namespace MaterialLib
{
namespace PhysicalConstant
{
constexpr double CelsiusZeroInKelvin = 273.15;

constexpr double IdealGasConstant = 8.3144621;

constexpr double BoltzmannConstant = 1.3806505e-23;  

constexpr double PlanckConstant = 6.626068e-34;  

namespace MolarMass
{
constexpr double Water = 0.018016;  

constexpr double N2 = 0.028013;  

constexpr double O2 = 0.032;  

constexpr double Air = 0.02897;  

constexpr double H2 = 0.002016;  
}  // namespace MolarMass

namespace SpecificGasConstant
{
constexpr double WaterVapour =
    IdealGasConstant / MolarMass::Water;  // = 461.504;
}  // namespace SpecificGasConstant

namespace HenryConstant
{
constexpr double HenryConstantH2 = 7.65e-6;  
}  // namespace HenryConstant
}  // namespace PhysicalConstant
}  // namespace MaterialLib